// 此文件为浏览器默认样式,富文本显示可能需要
#demo{
    html, address,
    blockquote,
    body, dd, div,
    dl, dt, fieldset, form,
    frame, frameset,
    h1, h2, h3, h4,
    h5, h6, noframes,
    ol, p, ul, center,
    dir, hr, menu, pre   { display: block }
    li              { display: list-item }
    head            { display: none }
    table           { display: table }
    tr              { display: table-row }
    thead           { display: table-header-group }
    tbody           { display: table-row-group }
    tfoot           { display: table-footer-group }
    col             { display: table-column }
    colgroup        { display: table-column-group }
    td, th          { display: table-cell; }
    caption         { display: table-caption }
    th              { font-weight: bolder; text-align: center }
    caption         { text-align: center }
    body            { margin: 8px; line-height: 1.12 }
    h1              { font-size: 2em; margin: .67em 0 }
    h2              { font-size: 1.5em; margin: .75em 0 }
    h3              { font-size: 1.17em; margin: .83em 0 }
    h4, p,
    blockquote, ul,
    fieldset, form,
    ol, dl, dir,
    menu            { margin: 1.12em 0 }
    
    h5              { font-size: .83em; margin: 1.5em 0 }
    h6              { font-size: .75em; margin: 1.67em 0 }
    h1, h2, h3, h4,
    h5, h6, b,
    strong          { font-weight: bolder }
    blockquote      { margin-left: 40px; margin-right: 40px }
    i, cite, em,
    var, address    { font-style: italic }
    pre, tt, code,
    kbd, samp       { font-family: monospace }
    pre             { white-space: pre }
    button, textarea,
    input, object,
    select          { display:inline-block; }
    big             { font-size: 1.17em }
    small, sub, sup { font-size: .83em }
    sub             { vertical-align: sub }
    sup             { vertical-align: super }
    table           { border-spacing: 2px; }
    thead, tbody,
    tfoot           { vertical-align: middle }
    td, th          { vertical-align: inherit }
    s, strike, del  { text-decoration: line-through }
    hr              { border: 1px inset }
    ol, ul, dir,
    menu, dd        { margin-left: 40px }
    ol              { list-style-type: decimal }
    ol ul, ul ol,
    ul ul, ol ol    { margin-top: 0; margin-bottom: 0 }
    u, ins          { text-decoration: underline }
    br:before       { content: ”\A” }
    :before, :after { white-space: pre-line }
    
    center          { text-align: center }
    abbr, acronym   { font-variant: small-caps; letter-spacing: 0.1em }
    :link, :visited { text-decoration: underline }
    :focus          { outline: thin dotted invert }
    
    
    BDO[DIR="ltr"]  { direction: ltr; unicode-bidi: bidi-override }
    BDO[DIR="rtl"]  { direction: rtl; unicode-bidi: bidi-override }
    
    *[DIR="ltr"]    { direction: ltr; unicode-bidi: embed }
    *[DIR="rtl"]    { direction: rtl; unicode-bidi: embed }
    
    @media print {
      h1            { page-break-before: always }
      h1, h2, h3,
      h4, h5, h6    { page-break-after: avoid }
      ul, ol, dl    { page-break-before: avoid}
    }
    }